Michelson interferometer

Low cost DIY Michelson Interferometer
This is my Michelson interferometer project, it is very low cost:
-1 Red laser pointer (like rifle pointer)
-2 old hard disks (2.5'') as mirrors
-1 microscope specimen mirror as beamsplitter
-1 lens from old camera objective (to project the image on the wall)
-6 springs for mirror holders
-6 nuts (M4) for mirror holders
-6 bolts (M4) for mirror holders
-hot glue
-wooden board
-6 wood screw (to fix the elements on the wooden board

it costed me less than 30€ and some patience

Watch video on [Youtube](https://youtu.be/e66Kz-9ryWk)